<template>
	<section>
		<!--工具条-->
		<el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
			<el-form :inline="true" :model="filters">
				<el-form-item>
					<el-input v-model="filters.keyword" placeholder="关键字"></el-input>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" v-on:click="getDepartments">查询</el-button>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" @click="handleAdd">新增</el-button>
				</el-form-item>
			</el-form>
		</el-col>

		<!--列表-->
		<el-table :data="departments" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">
			<el-table-column type="selection" width="55">
			</el-table-column>
			<el-table-column type="index" width="60">
			</el-table-column>
			<el-table-column prop="name" label="名称" width="180" sortable>
			</el-table-column>
			<el-table-column prop="sn" label="编号" width="120" sortable>
			</el-table-column>
			<el-table-column prop="state" label="状态" width="100" sortable>
				<template scope="scope">
					<span style="color: green" v-if="scope.row.state ==0">正常</span>
					<span style="color: red" v-else-if="scope.row.state ==-1">禁用</span>
					<span style="color: gray" v-else>未知</span>
				</template>
			</el-table-column>
			<el-table-column prop="manager.username" label="管理员" width="120" sortable>
			</el-table-column>
			<el-table-column prop="parent.name" label="父部门" width="120" sortable>
			</el-table-column>
			<el-table-column label="操作">
				<template scope="scope">
					<el-button size="small" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
					<el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)">删除</el-button>
				</template>
			</el-table-column>
		</el-table>

		<!--工具条-->
		<el-col :span="24" class="toolbar">
			<el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0">批量删除</el-button>
			<el-pagination layout="prev, pager, next" @current-change="handleCurrentChange"
						   :page-size="pageSize"
						   :total="total"
						   :current-page="page"
						   style="float:right;">
			</el-pagination>
		</el-col>

		<!--新增或编辑界面
		   :rules=  申明校验规则
		   ref= 绑定当前表当 取一个别名

		-->
		<el-dialog title="新增/编辑" :visible.sync="departmentFormVisible" :close-on-click-modal="false">
			<el-form :model="departmentForm" label-width="80px" :rules="departmentFormRules" ref="departmentForm">
				<el-form-item label="名称" prop="name">
					<el-input v-model="departmentForm.name" auto-complete="off"></el-input>
				</el-form-item>
				<el-form-item label="编码" prop="sn">
					<el-input v-model="departmentForm.sn" auto-complete="off"></el-input>
				</el-form-item>
				<el-form-item label="状态" prop="state">
					<el-radio-group v-model="departmentForm.state">
						<el-radio class="radio" :label="0">正常</el-radio>
						<el-radio class="radio" :label="-1">禁用</el-radio>
					</el-radio-group>
				</el-form-item>
				<el-form-item label="管理员" prop="manager">
					<!--
					:key= 选中ID
					:label= 选中后，窗体中显示的值
					:value 最终绑定给model层的数据（注意：如果value要绑定对象，那么必须加上：value-key="id"）
					-->
					<el-select v-model="departmentForm.manager" value-key="id" placeholder="请选择">
						<el-option
								v-for="item in employees"
								:key="item.id"
								:label="item.username"
								:value="item">
							<span style="float: left">{{ item.username }}</span>
							<span style="float: right; color: #8492a6; font-size: 13px">{{ item.phone }}</span>
						</el-option>
					</el-select>
				</el-form-item>
				<el-form-item label="父部门" prop="parent">
					<!--
					  :options:双向绑定data层数据
					  value:选中后传递给后端的值
					  label：选中显示到窗体中的值
					-->
					<el-cascader v-model="departmentForm.parent"
							:options="deptTree"
					:props="{
					checkStrictly: true,
					value:'id',
					label:'name'
					}"
					clearable></el-cascader>
				</el-form-item>
			</el-form>
			<div slot="footer" class="dialog-footer">
				<el-button @click.native="departmentFormVisible = false">取消</el-button>
				<el-button type="primary" @click.native="save" :loading="departmentLoading">提交</el-button>
			</div>
		</el-dialog>

	</section>
</template>

<script>
	export default {
		data() {
			return {
				filters: {
                    keyword: ''
				},
				departments: [],
				total: 0,
                pageSize:10,
				page: 1,
				listLoading: false,
				sels: [],//列表选中行

				departmentFormVisible: false,//新增/编辑界面是否显示
				departmentLoading: false,//忙等框
				departmentFormRules: {//申明校验规则
					name: [
						{ required: true, message: '请输入姓名', trigger: 'blur' }

					],
                    sn: [
                        { required: true, message: '请输编号', trigger: 'blur' }
                    ]

				},

				//编辑界面数据
				departmentForm: {
					id: null,
					name: '',
					sn: '',
				state: 0,
					manager: null,
					parent: null
				},
                employees:[],//页面初始化的时候没有管理员列表
				deptTree:[]//部门树集合

			}
		},
		methods: {
			//状态显示转换
			/*formatSex: function (row, column) {
				return row.state == 0 ? '正常' : row.state == -1 ? '禁用' : '未知';
			},*/
			handleCurrentChange(val) {
				this.page = val;
				this.getDepartments();
			},
			//获取部门列表
			getDepartments() {
				let para = {
					currentPage: this.page,
                    pageSize: this.pageSize,
                    keyword: this.filters.keyword
				};
				this.listLoading = true;//开启忙等框

				/*发送axios请求，从后端拿数据*/
				this.$http.post("/department",para)
					.then(result=>{
                        this.total = result.data.total;
                        this.departments = result.data.rows;
                        this.listLoading = false;//关闭忙等框
					})
					.catch(result=>{
                        this.$message({
                            message: '系统异常',
                            type: 'error'
                        });
					})
			},
			//删除
			handleDel: function (index, row) {
				this.$confirm('确认删除该记录吗?', '温馨提示', {
					type: 'warning'
				}).then(() => {
					this.listLoading = true;
					//NProgress.start();
					this.$http.delete("/department/"+row.id)
						.then(result=>{
						    result = result.data;
						    if(result.success){
                                this.$message({
                                    message: '删除成功',
                                    type: 'success'
                                });
                                this.page = 1;//如果删除成功，定位到第一页
							}else{
                                this.$message({
                                    message: '删除失败'+result.message,
                                    type: 'error'
                                });
							}
                            this.getDepartments();//重新刷新列表
						})
				}).catch(() => {

				});
			},
			//显示编辑界面
			handleEdit: function (index, row) {
				this.departmentFormVisible = true;//显示编辑窗口
				//Object.assign 克隆
				this.departmentForm = Object.assign({}, row);//回显数据
                //触发去后端加载部门树
				this.getDeptTree();
				//假装回显
                //this.departmentForm.parent = [1,12];
                let dirPath = row.dirPath; // /2/5/11
                if(dirPath){
                    let tmp = [];
                    if(dirPath){
                        let dirPaths =  dirPath.trim().split("/"); //['','2','5','11']
                        for(let i=1;i<dirPaths.length-1;i++){
                            tmp[i-1] = parseInt(dirPaths[i]);
                        }
                    }

                    this.departmentForm.parent = tmp; //根据dirpath构造数组
                }
			},
			//显示新增界面
			handleAdd: function () {
				this.departmentFormVisible = true;//显示新增弹出框
				this.departmentForm={
                    id: null,
                    name: '',
                    sn: '',
                    state: 0,
                    manager: null,
                    parent: null
                };
				//触发去后端加载部门树
                this.getDeptTree();
			},
			//编辑
            save: function () {
				this.$refs.departmentForm.validate((valid) => {//在一次触发表单校验（理解）
					if (valid) {
						this.$confirm('确认提交吗？', '温馨提示', {}).then(() => {
							this.departmentLoading = true;//开启忙等框
							//NProgress.start();
							//预处理格式  [1]  [1,12]   ==>parent:{id:12}
							let para = Object.assign({}, this.departmentForm);
							if(para.parent){
                                //从表单复制对象中得到parent
                                let parentArrey = para.parent;//[1,12]
                                //将parent数组的最后一个值拿出来（最后一个值才是我们选中的父部门）
                                let lastDeptId = parentArrey[parentArrey.length -1];//我当前选中的部门ID
                                //重新将parent属性赋值成 json对象
                                para.parent ={"id":lastDeptId};
							}
							this.$http.put("/department",para)
								.then(result=>{
									result = result.data;
                                    this.departmentLoading = false;//关闭忙等框
									if(result.success){
                                        this.$message({
                                            message: "操作成功！",//直接提示后端错误就可以了
                                            type: 'success'
                                        });
                                        this.departmentFormVisible = false;//关闭弹出框
										this.page = 1;//定位到第一页
									    this.getDepartments();
									}else{
                                        this.$message({
                                            message: result.message,//直接提示后端错误就可以了
                                            type: 'error'
                                        });
									}
								})
								.catch(result=>{
                                    this.$message({
                                        message: '系统错误',
                                        type: 'error'
                                    });
                                    this.departmentLoading = false;//关闭忙等框
                                    this.departmentFormVisible = false;//关闭弹出框
								})
						});
					}
				});
			},
			selsChange: function (sels) {//选中的所有行sels
				this.sels = sels;
			},
			//批量删除
			batchRemove: function () {
				var ids = this.sels.map(item => item.id);//[1,2]
				this.$confirm('确认删除选中记录吗？', '温馨提示', {
					type: 'warning'
				}).then(() => {//返回框的确认按钮
					this.listLoading = true;
					//NProgress.start();

					this.$http.patch("/department",ids)
						.then(result=>{
                            this.listLoading = false;
                            result = result.data;
                            if(result.success){//删除成功
                                this.$message({
                                    message: '删除成功',
                                    type: 'success'
                                });
							this.page = 1;//删除成功定位到第一页
							}else{//后端删除失败
                                this.$message({
                                    message: result.message,
                                    type: 'error'
                                });
							}
                            this.getDepartments();
						})
						.catch(result=>{
                            this.listLoading = false;
                            this.$message({
                                message: '系统异常',
                                type: 'error'
                            });
						})
				}).catch(() => {//取消确认框

				});
			},
            getEmployees(){
			    this.$http.get("/employee")
					.then(result=>{
					    result = result.data;//List<Employee>
						if(result){
						    this.employees = result;
						}
					})
			},
            getDeptTree(){//加载部门树
                this.$http.get("/department/tree")
                    .then(result=>{
                        result = result.data;//List<Department>
                        if(result){
                            this.deptTree = result;
                        }
                    })

			}
		},
		mounted() {
			this.getDepartments();
			//页面加载完成后请求后端，获取管理员列表
			this.getEmployees();
		}
	}

</script>

<style scoped>

</style>